How to detect and pass data in previous screen for Swipe-to-Go-Back Gesture in Flutter App Navigation

Question

This works perfectly when the user clicks on the back button in the app bar. In Android devices, when the user performs a swipe-to-go-back gesture from the right edge of the screen, not able to return data in this case.

I tried using PopScope but not able to navigate to previous screen with data to be returned.

I'm looking for a way to handle the swipe-to-go-back gesture in Android so that I can still return data when the user swipes to navigate back.

PopScope(
                canPop: true,
                onPopInvoked: (didPop) {}, // deprecated
                onPopInvokedWithResult: (didPop, result) {
                  Navigator.of(context).pop(true);
                },

Nnamani Daniel · Accepted Answer · 2025-02-12 06:40:23Z

0

Set canPop to false, if it is set to true, the screen pops before calling onpopinvokedWithResulth

answered Feb 12 at 6:40

Nnamani Daniel

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 Engineer · Accepted Answer · 2025-02-12 09:47:46Z

0

Based on the Android-specific swipe behavior, here's the solution for handling both swipe gestures and back button with data. I've faced similar issues.

Here...

canPop: false: It's required to handle custom back logic
onPopInvoked: Handles both swipe and system back Matching data in both onPopInvoked and back button.

PopScope(
  canPop: false, // It prevents automatic pop behavior
  onPopInvoked: (didPop) async {
    if (didPop) return;
    
    final data = {
      'key': 'value', 
      'status': 'success'
    };
    
    Navigator.of(context).pop(data);
  },
)

That's all you need to handle swipe-back with data return!

Hope it helps you 👍🏻

answered Feb 12 at 9:47

 Engineer

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How to detect and pass data in previous screen for Swipe-to-Go-Back Gesture in Flutter App Navigation

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